Compress PNG

Easily compress PNG images online for free while preserving image quality and transparency.

Or drop files here

The best tool to quickly compress PNG files by applying lossy compressions while preserving transparency. Save up to 70 to 80% size!



How to compress a PNG?

  • Click “Choose PNG Files” button to upload your PNG files (you can bulk compress 20 PNG files at a time)
  • Click the "Compress Now" button to start compressing.
  • Once the status change to "Done" click the "Download PNG" button to save the compressed PNG to your computer.

Best PNG Compressor

Our PNG compressor does not sacrifice quality for anything. We generate the best quality compressed PNGs while preserving transparency. At default settings, this tool is one of the fastest ways to compress PNG files on the web.

Advanced PNG Compression

Our default settings can compress most PNG files better than any other online tool. If you would like to compress PNG files even further, we provide the following settings via the "Advanced Settings" (optional):

  • PNG Quality- Set the lossy compression level applied to your PNG files.
  • PNG Compression Speed - Slower speeds yield better compression and quality.
  • PNG Colors- Reduce the number of colors for better compression.
  • Resize - Optionally, you can downscale the image to further reduce file size.

Free & Secure

Yes, this tool is 100% free. It works on any web browser. There are no registrations or software to install.
We delete all PNG files within 6 hours of compressing them. Plus, all uploads are done over a secure HTTPs connection.

PNG Compressor FAQ

Can you compress transparent PNG files?

Yes, compressed PNGs from this tool preserve full alpha transparency. Plus, the compressed PNGs are compatible with any browser and operating system, even Internet Explorer 6.


How does it work?

Our PNG compressor converts 32-bit truecolor PNGs with alpha channel to palette PNG (8-bit indexed color image). This stripping of colors by combining similar colors, while lossy, is often not noticeable to the human eye [1]. Plus, we also strip image metadata, to further reduce PNG file size.


Why should I compress PNG files?

A web page with optimized PNGs load faster, and your visitors will thank you for it! It can also lower your bandwidth cost.


Is there a max file size limit?

We can compress large PNGs up to 1GB in size!


Sources

[1] - Even Faster Web Sites: Performance Best Practices for Web Developers


Does FreeConvert provide other file compressors?

We sure do! Check out our Compress JPEG, Video Compressor, GIF Compressor, PDF Compressor, and Image Compressor